X-Git-Url: https://asedeno.scripts.mit.edu/gitweb/?a=blobdiff_plain;f=compat%2Fbswap.h;h=54756dbb05ba99ab1679f17a50f04c3f1cede8e6;hb=452c6d506b1a6dcf24d4ceaa592afc39c1c1a60e;hp=5cc4acbfccef771769974b9f7cd8f6bca9321354;hpb=ef3a4fd670a4874f9b598ef96b10b89117b806e1;p=git.git

diff --git a/compat/bswap.h b/compat/bswap.h
index 5cc4acbfc..54756dbb0 100644
--- a/compat/bswap.h
+++ b/compat/bswap.h
@@ -17,6 +17,8 @@ static inline uint32_t default_swab32(uint32_t val)
 		((val & 0x000000ff) << 24));
 }
 
+#undef bswap32
+
 #if defined(__GNUC__) && (defined(__i386__) || defined(__x86_64__))
 
 #define bswap32(x) ({ \
@@ -24,10 +26,20 @@ static inline uint32_t default_swab32(uint32_t val)
 	if (__builtin_constant_p(x)) { \
 		__res = default_swab32(x); \
 	} else { \
-		__asm__("bswap %0" : "=r" (__res) : "0" (x)); \
+		__asm__("bswap %0" : "=r" (__res) : "0" ((uint32_t)(x))); \
 	} \
 	__res; })
 
+#elif defined(_MSC_VER) && (defined(_M_IX86) || defined(_M_X64))
+
+#include <stdlib.h>
+
+#define bswap32(x) _byteswap_ulong(x)
+
+#endif
+
+#ifdef bswap32
+
 #undef ntohl
 #undef htonl
 #define ntohl(x) bswap32(x)